diff --git a/cmd/frpc/sub/http.go b/cmd/frpc/sub/http.go
index e2ea024..08e915c 100644
--- a/cmd/frpc/sub/http.go
+++ b/cmd/frpc/sub/http.go
@@ -28,7 +28,7 @@ import (
 func init() {
 	httpCmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
 	httpCmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
-	httpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp")
+	httpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp or websocket")
 	httpCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
 	httpCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
 	httpCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")
diff --git a/cmd/frpc/sub/https.go b/cmd/frpc/sub/https.go
index 5c0b0e7..5eb6a7d 100644
--- a/cmd/frpc/sub/https.go
+++ b/cmd/frpc/sub/https.go
@@ -28,7 +28,7 @@ import (
 func init() {
 	httpsCmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
 	httpsCmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
-	httpsCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp")
+	httpsCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp or websocket")
 	httpsCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
 	httpsCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
 	httpsCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")
diff --git a/cmd/frpc/sub/stcp.go b/cmd/frpc/sub/stcp.go
index 0920927..c91040e 100644
--- a/cmd/frpc/sub/stcp.go
+++ b/cmd/frpc/sub/stcp.go
@@ -27,7 +27,7 @@ import (
 func init() {
 	stcpCmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
 	stcpCmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
-	stcpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp")
+	stcpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp or websocket")
 	stcpCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
 	stcpCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
 	stcpCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")
diff --git a/cmd/frpc/sub/udp.go b/cmd/frpc/sub/udp.go
index bbe1936..3572e41 100644
--- a/cmd/frpc/sub/udp.go
+++ b/cmd/frpc/sub/udp.go
@@ -27,7 +27,7 @@ import (
 func init() {
 	udpCmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
 	udpCmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
-	udpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp")
+	udpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp or websocket")
 	udpCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
 	udpCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
 	udpCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")
diff --git a/cmd/frpc/sub/xtcp.go b/cmd/frpc/sub/xtcp.go
index b6ae541..0a81e18 100644
--- a/cmd/frpc/sub/xtcp.go
+++ b/cmd/frpc/sub/xtcp.go
@@ -27,7 +27,7 @@ import (
 func init() {
 	xtcpCmd.PersistentFlags().StringVarP(&serverAddr, "server_addr", "s", "127.0.0.1:7000", "frp server's address")
 	xtcpCmd.PersistentFlags().StringVarP(&user, "user", "u", "", "user")
-	xtcpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp")
+	xtcpCmd.PersistentFlags().StringVarP(&protocol, "protocol", "p", "tcp", "tcp or kcp or websocket")
 	xtcpCmd.PersistentFlags().StringVarP(&token, "token", "t", "", "auth token")
 	xtcpCmd.PersistentFlags().StringVarP(&logLevel, "log_level", "", "info", "log level")
 	xtcpCmd.PersistentFlags().StringVarP(&logFile, "log_file", "", "console", "console or file path")